diff --git a/LibHR/Observables/glueballs.c b/LibHR/Observables/glueballs.c
index c9a653c47..d649d85c9 100644
--- a/LibHR/Observables/glueballs.c
+++ b/LibHR/Observables/glueballs.c
@@ -4,7 +4,7 @@
 \***************************************************************************/
 
 #include "utils.h"
-#include "glueballs.h"
+#include "observables.h"
 #include "global.h"
 
 void measure_1pt_glueballs(int nblockingstart, int nblockingend, double *smear_val, hr_complex *gb_storage) {